Horstmann 425 Coronet Installation Instructions

FITTING THE PROGRAMMER
f surface wiring has been used, remove the knockout/insert from the
bottom of the programmer to accommodate it.
oosen the two 'captive' retaining screws on the top of the unit. Now fit
he programmer to the backplate, line the lugs on the programmer with
he flanges on the backplate.
Swing the top of the programmer into position ensuring that the
onnection blades on the back of the unit locate into the terminal slots
n the backplate.
ighten the two 'captive' retaining screws to fix the unit
ecurely, then switch on the mains supply.
The tappets can now be set to suit the User's requirements.
Please refer to the User's Guide provided.
GENERAL INFORMATION
Before handing over the installation to the user, always ensure that the system responds
correctly on all control programmes and that other electrically operated equipment and controls are
correctly adjusted.
EXPLAIN HOW TO OPERATE THE CONTROLS AND HAND OVER THE USERS OPERATING INSTRUCTIONS TO THE USER.
SPECIFICATION: CORONET - DIADEM - TIARA
MODELS:
Coronet: Single Circuit 13(6)A 230V AC
Diadem: Double Circuit 6(2.5)A 230V AC
Tiara: Double Circuit 6(2.5)A 230V AC
Contact type: Micro dis-connection(Voltage free)
Motor Supply: 230-240V AC 50Hz
Double Insulated
Enclosure Protection: IP 20
55 o C
Max. Operating Temperature :
Dirt protection: Normal situations.
ndependently mounted control for surface mounting.
Purpose of Control: Electronic Time Switch
Operating time limitation: Continuous
Type 1 Action
Case material: Thermoplastic, flame retardant
Dimensions: 153mm x 112mm x 33mm
Clock: 24 hour
Programme selection: 24 Hours, On all day, Twice, Off
Operating periods per day: Two
Override: Instant advance
Backplate: 9 Pin terminal connection
Horstmann Controls Limited
Email: sales@horstmann.co.uk
Website: www.horstmann.co.uk
t:0117 9788 773 - f:0117 9788 701
AGE 4
END VIEW OF 425 ELECTRO-MECHANICAL PROGRAMMER
Bristol
BS4 1UP
LEAFLET No P27673
INSTALLATION AND CONNECTION SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON
AND IN ACCORDANCE WITH THE CURRENT EDITION OF THE IEE WIRING REGULATIONS.
WARNING : ISOLATE MAINS SUPPLY BEFORE COMMENCING INSTALLATION
Once the Backplate has been removed from
the packaging please ensure the programmer
is re-sealed to prevent damage from dust,
debris etc.
The Backplate should be fitted with the
wiring terminals located at the top and in a
position which allows the relevant clearances
around the programmer. (See diagram)
DIRECT WALL MOUNTING
Offer the plate to the wall in the position where the programmer is to be mounted, remembering that
the Backplate fits to the right hand end of the programmer.
Mark the fixing positions through the slots in the Backplate(Fixing centres 60.3mm), drill and plug the
wall, then secure the plate in position. The slots in the Backplate will
compensate for any misalignment of the fixings.
WIRING BOX MOUNTING
The Backplate may be fitted directly on to a single gang steel flush wiring box complying with BS4662,
using two M3.5 screws.
425 Electro-Mechanical Programmers are suitable for mounting on a flat surface only, they must not be
positioned on a surface mounted wall box or on unearthed metal surfaces.
All necessary electrical connections should now be made. Flush wiring can enter from the rear through
the aperture in the Backplate. Surface wiring can only enter from beneath the programmer and must
be securely clamped.
The mains supply terminals are intended to be connected to the supply by means of fixed wiring.
The recommended cable sizes are 1.0mm 2 or 1.5mm 2 for a Diadem/Tiara and 1.5mm 2 for a Coronet.
ISSUE 11
The 425 Range of traditional Electro-mechanical
Programmers offer a simple yet effective way
of controlling your environment. The twin circuit
Diadem and Tiara will also allow you to have
independent control of Hot water and Central
heating.
FITTING THE BACKPLATE
ELECTRICAL CONNECTIONS
PAGE 1